Rare diseases · Sign or symptom
Fifth metacarpal with ulnar notch
HP:0005900
What it means
Presence of an angular or V -shaped indentation on the ulnar side of the fifth metacarpal bone (i.e., on the sides towards the fifth finger).
Rare diseases that can present with this1
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Fifth metacarpal notched on ulnar side
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.